Speaker
Dr
Aldo Ianni
(INFN LNGS)
Description
DarkSide-50 (DS-50) at Gran Sasso underground laboratory, Italy, is a
direct dark matter search experiment based on a TPC with liquid argon from
underground sources. The DS-50 TPC, with 50 kg of active argon and a
projected fiducial mass of >33 kg, is installed inside an active neutron
veto based on a boron-loaded organic scintillator. The neutron veto is
built inside a water cherenkov muon veto. DS-50 has been taking data since
Nov 2013, collecting more than 2e7 events with atmospheric argon. This
data represents an exposure to the largest background, beta decays of
Ar-39, comparable to the full three-year run planned for DS-50 with
underground argon. When analyzed with a threshold that would give a
sensitivity in the full run of about 1e-45 cm^2 at a WIMP mass of 100
GeV/c^2, there is no Ar-39 background observed. The detector design and
performance will be presented as well as results from the atmospheric
argon run still in progress. Plans for the underground argon run and for
a ton-scale detector within the same neutron veto vessel will be
presented.
Primary author
Dr
Aldo Ianni
(INFN LNGS)
